Answer:
7/20
Step-by-step explanation:
given,
2r = 7/10
r= 7/10*1/2
r= 7/20
Because you know the area and that the shape is a square... if the side length is "s"... to find "s" you would say...
s²=1.69
Take the root of both sides and...
s=1.3 km
Answer:

Step-by-step explanation:














Hope this is correct and helpful
HAVE A GOOD DAY!
The ratio would be 3:4, or however you write ratios.
Hope this helped! :)